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Road testing the 3T Ventus aero bar properly required a bit of trigonometry, a dash of ingenuity, and smidge of creativity, some nerve, and a credit card with room on it.

There are several companies that say they have rubber nobody else has. Let's take a look at those claims, and the rubber they're using, and see what we can glean about the state of materials in the wetsuits we use today.

The truth is, almost every wetsuit feature has a corresponding detriment, and certain features have only the detriment, and no corresponding asset. You must decide what features matter to you.

It's considered the aerodynamic benchmark for double-diamond (front and rear triangle) bikes.

Practitioners of motorized sports recognized the traction benefits of slick tires a long time ago.

If the frame of a bicycle represents the “heart” of a bicycle, it can be argued that wheels and tires represent the “soul”.

After two decades of heated declarations and ill-informed pronouncements, there remains not one shred of evidence suggesting one of these wheel sizes is inherently superior to the other. And yet...

It is not that often that a person needs a custom bike, but this is the most typical of circumstances when a custom is indicated.

It's one thing to comprehend concepts like trail and steering axis and gyroscopic forces, another thing altogether to know with precision how a bicycle is going to handle once a design is executed in the form of a road-ready machine.

I ride a 59cm bike or, if it's a road race bike (as opposed to a tri bike) I'll ride a 60cm bike. If it's a Litespeed tri bike, I'll ride 57cm, and so it goes. How are these bikes measured, and why do I ride different sizes depending on the manufacturer?

There have been real studies performed by real scientists on the subject of seat angles.

Are numerical sizing schemes more accurate than T-shirt sizes? Yes, but only marginally.

Thinking about getting a Scott Plasma? How about a Specialized Transition S Works? What size bike is your best fit? Would it surprise you to know that one in size M fits precisely the same size as the other in size L?

How power propels a bike: This is the second of two introductory articles preparing for a year-long series on training with power.

The nice thing about the Internet -- or the maddening thing, if you like finality -- is that there rarely is any finality. Articles that we publish are not the last word on a subject, they're typically the first word.

In barely a month USA Cycling joins the UCI in legislating the Randy Newman ethic: "Don't want no short people round here." Fortunately, there is a deceptively easy alternative for both of cycling's governing bodies.

Floyd Landis, Fabian Cancellara, Dave Zabriskie, Levi Leipheimer have all raced with the "hands in face" position. John Cobb pulls out of his wind tunnel archives an analysis of hand heights.

Trek's engineers went public with their latest Equinox TTX wind tunnel test to counteract what it called spotty and erroneous assumptions about its recent data.